Varifan ECS-2M, User Manual

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Page 12
ECS 2M
2.4.1.2 - 230 VAC
Assure that the line voltage selector switch is set to
230 VAC.
Connect the power cable to terminals 5 and 6
on the main (bottom) board, connect the ground wire to
terminal 7 on the main board.
2.4.2 - Fan 1 (terminals 3 and 4)
Stage 1 of the ECS-2M controls the operation of the
primary fan. Connect the two leads from Fan 1 to
terminals 3 and 4 on the main (bottom) board.
2.4.3 - Fan 2/Heater (terminals 1 and 2)
Stage 2 of the ECS-2M provides a dry contact closure
which controls the operation of a second fixed speed fan
or a heater. This contact closure is voltage rated to 230
VAC. The current rating of the dry contact is 10 Amps
(resistive) for a heater and 6 Amps (inductive) for a fan.
Set the software settings DIP switch behind of the control
panel faceplate to ON for a fan or OFF for a heater.
Connect the heater or Fan 2 to terminals 1 and 2 on the
main (bottom) board.
2.5 TEMPERATURE / HUMIDITY PROBES
Temperature and humidity probes use a “Class 2” low
voltage circuit. These cables can extend up to a distance
of 500 feet (150 meters). Single probe temperature and
humidity connections are illustrated in Figure 4, while
temperature probe averaging connections are illustrated in
Figure 5.
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